Specifically, the Ed25519 and Ed448 curves (DNSSEC algorithms 15 and 16 respectively).
DISCLAIMER: I am not a cryptographer!
This allowed me to
keymgr import-bind keys created with the above-mentioned algorithms. I have not yet used them for anything productive, but
keymgr list looks sane and
keymgr dnskey gives the same public key as the original BIND file, so I think this is about right?
I wasn't sure if there are any other
keymgr sub-commands where such support would also be needed for this to make any sense, if so feel free to point me to the right direction (or wait a few days while I try to roll this out